Convertible updraft and downdraft boiler.



iH. TIELKEIVIEYER.

CONVERTIBLE UPDRAFT AND DOWNDRAFT BOILER.

APPLICATION ,FILED AuG.2: :915.

l .,wm. Patented Nov. 28, 19:6.

3 SHEETS-SHEET lttozmew HA TIELKEIVIEYER.

CONVERTIBLE UPDRAFT AND DOWNDRAFT BOILER.

APPLICATIONl F'ILED AUG.2. 1916.

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Patented Nov. 28, i916.

3 SHEETS-SHEET 2`. l

H. TIELKEIVIEYER.

CONVERTIBLE UPDRAFT AND DOWNDRAFT BOILER.

APPucATloN FILED AuG.2,19|s.

1l .,QUQYQ, Patented Nov. 28, 1916.

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ENTE@ FTAFF@ HENRY TELKEMEYER, OF ST. LOUS, MISSOUB.

CONVERTIBLE PDRAFT AND DOWNDRAFT BOILER.

Appli-cation filed August 2, 1916.

To all whom it may concern Be it known that I, HENRY TrnLiriiMnYnR, acitizen of the United States, residing at St. Louis, in the State ofMissouri, have invented certain new and useful Improvements inConvertible Updraft and Downdraft Boilers; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

rlhis invention relates to certain new and useful improvements inheating boilers of the up and down draft type and more especially thatdesign embodying a plurality of superimposed. water sections havingdraft passages therethrough. as set forth in my application for UnitedStates Letters Patent filed April Q8, 1916, Serial Number 94.194.

in object of the present invention is to' produce an efficient andeconomical convertible up and down draft boiler comprising a series ofsuperimposed communicating water sections having arranged therethrough aplurality of maximum heat radiating passages for directing the flow ofthe products of combustion in an upward or downward path as may bedesired.

Another object of this invention is the production of a boiler in whichthe circulating medium of either hot water or steam entirely surroundsthe products of combustion, thereby securing the highest possibleabsorption of heat, irrespective of which draft passage is employed.

. rhis invention has for another object the production of asubstantiallyT cylindrical vertical boiler composed of a plurality ofsuperimposed water sections, among which is interposed a hollow watergrate formed integral with one of the water sections.

A further object of the present invention is to produce a compact steamor hot water boiler having means for controlling the direction of thedraft or flow of the products of combustion, the said means including anSpecification of Letters Patent.

Patented Nov. 28, i916,

Serial No. 112,733.

on the line of Fig. l. Fig. 3 is a ver Y tical sectional view taken atright angles to Fig. 2 of the heating boiler. Fig. 4 is a horizontalsectional view on the line 4-4 of Fig. 3. Fig. 5 is a horizontalsectional view on the line 5-5 of Fig. 3. Fig. 6 is a bottom plan viewof the top or cap water section illustrating the U or horseshoe shapedportion formed therein, and Fig. 7 is a bottom plan view of the maj oror intermediate water section, showing the crescent-shaped draft passageon one side thereof, and the series of openings for draft passage on theother side.

rllhe present invention has been designed to include a series ofsuperimposed hollow water sections suitably positioned upon a lower orbasic section which preferably consists of the usual ash-box and grateof any well known construction. These several superimposed hollow watersections when positioned and secured together are designed to produce avertical substantially cylindrical boiler, portions of which, such asthe hollow water grate, the circulating chambers, and the baffling draftconduits, are cast integral with the said sections and arranged toestablish communication between them in a compact and highly eilicientheat producing manner.

In the'production of the herein-described boiler there is included alower or bottom hollow water section positioned and secured to the basicash-box section, a hollow water grate section having cast integraltherewith a hollow water grate, between which latter and the encirclingchamber circulating communication of the heating medium is established;a major or intermediate hollow water section positioned and secured tothe hollow water grate section; a top or uppermost hollovsT Watersection provided with suitable means for absorbing a maximum amount ofheat from the products of combustion as they pass therethrough; meansprovided in the said boiler between the lsaid top and major watersection for conresponding reference characters designate usual gratebars #i Vand ash pit 5.

similar parts, the boiler as a heating unit is indicated bythe numeral1, and comprises the bottom section 2 mounted upon a suitable base 3which may be provided with the As these elements are of any well knownform of construction, a further detailed description thereof will not begiven.

The 'boiler 1 is of circular double shell formation, as indicated at 6,and when the several water sections Vare secured together a verticalcylindrical or round heating boiler is produced. rThe 'compactness ofthis boiler for'accommodation in limited areas requiring a highefficiency of heat will be apparent from this design in construction.

The circular double shell is preferably corrugated internally, orotherwise similarly shaped, as indicated at 7, for purposes of absorbinga maximum amount of heat. rllhe heating medium, whether it be hot wateror steam, is designed to circulate between the double shell formation ofthe superimposed sections of the boiler and communicate with the hollowwater grateY section, as will be readily understood, by referring toFig-2.

Referring to the respective hollow water sections hereinbeforementioned, the bottom section 2 is provided Vwith the interior heatingchamber 9,7eXtending the full diameter thereof between the circulardouble shell.

The chamber 10 is formed between the double wall construction of thewater section and receives the returning heating medium from the systemthrough pipe connections 11 i bottom water section 8 is a verticalarcuately and 12, see Figs. 1 and 8. A door 13 is preferably provided,as shown in this bottom water section 8. i

Communicating` with the chamber 9 of the arrange draft passageway 11iwhich eX- tends upward and leads into the top water section, thusestablishing an outlet flue for he products of combustion when theboiler is used with a down draft. This passagethrough the connecting'heat medium conduits 17. These conduits 17 are arranged in spacedrelation at the rear of the boiler and span the vertical flue 1st, asclearly shown in Fig. Communication is also established at the front ofthe boiler between the hollow water grate and the double wallconstruction as shown.

The water grate comprises a plurality of longitudinally extending barsof substantially rectangular cross section having slightly taperedsides, as shown in Fig. 3. While these sections are shown as ofsubstantially rectangular formation, it will be understood that variousother cross sectional areas can be substituted, such as a square,iexagonal, diamond, irregular, oval, elliptical or egg-shaped, etc.

A heating chamber 1S is provided in the water grate section 15, abovethe water grate, and the encircling chamber 19 between the double wallconstruction receives the heating medium which circulates through theopenings 20 formed between the sections.

The major or intermediate water section 21 is mounted upon the hollowwater grate section 15 and is formed with an interior heatingL chamber22 around and over which the. chamber 23 extends between the double wallconstruction, as clearly shown in Figs. 2 and The major section isprovided with a double door construction, as shown. through which fuelis introduced. The gen-4 eral contour of this major section, moreespecially the heating chamber and the encircling chamber 23, iselliptical. The portion of this major section through which the flue 14eextends is provided at the rear thereof with a chamber 24- formedbetween the double wall construction. This chain-- ber 24 and thechamber Q3 has circulating communication with the water grate section ofthe boiler through the openings Q5. topY of the major water sections isprovided with draft openings or passageways 2G. These openings form thevertical draft lines for the products of combustion when the boiler isused with an up draft. The opening and closing of these being controlledby a damper or regulating means mounted between the major and top watersections, and operable from the outside of the boiler, as hereinafterdescribed.

The top water section 27 is mounted upon the major water section and isprovided with an interior heating chamber 28 around and over whichextends an encircling chainber 29 formed between the double wallconstruction for the circulation of the heating medium. Openings 30establish communication between the chambers 24 and 23 of the majorsection and the chamber 29 of the top section.

Communicating with the encircling chain-4 ber 29 of the top sectionthere is provided FTX another U or horseshoe-shaped' chamber 31 betweena double wall construction formed integral with the top section. Thischam` ber 3l has communication with the chamber 29 through the conduitor passageway 32.

rlhe general arrangement of the U-shaped chamber 31 is longitudinal withrespect to the front and rear of the boiler', thereby affording amaximum absorption of heat from the products of combustion in theirpassage through the hereinbefore described flue according to thedirection of draft. lVhile l have preferably shown and described thiscircular form of chamber as U-shaped and longitudinally disposed., itwill be understood that various modifications thereof can be resorted towithout de'- parting from the spirit of the invention.

The products of combustion are adapted to pass through an opening formedbe'- tween the lU arms of the chamber 31, and into a suitable chimney,not shown, and a door 24 is provided in the top section, as shown.Outlet pipe connections 35 Vand 36 are positioned in the top section andprovided for the circulation of the heating medium from the said topsection out into the system in the usual manner.

lThe damper or regulating means for converting the boiler into an updraft or down draft heater will now be described. Referring to Figs. 2,3, and 5 of the drawings, the said means comprises a shiftable damper orcovering plate 37 adapted to rest upon the surface of the major watersection and to cover and uncoverv the openings 26 therein, according tothe draft desired. The damper plate 37 is formed with a suitable arm 3Spivoted at 39 in the major section. The pivotal connection 39 consistsof a stud 40 revolubly mounted on a socket 41, see Figs. 2 and 3. .Asuitable handle 42 is provided on the damper plate 37 and protrudes intothe space 43 covered by the door 34 of the top section, where it can beeasily grasped by the attendant for the purpose of changing the draft ofthe boiler. lhe manipulation of this draft converting means will beapparent. When it is desired to use the boiler as a down draft heaterthe damper 37 is moved by agency of the 'handle 42 to cover the openings26 in the major water section thereby directing the draft downwardlythrough the water grate into the chamber 9 and thence upwardly throughthe ue 14 into the chamber 28, thence through the chamber 33 of theU-shaped portion in the top section, and out into the chimney. When itis desired to convert the boiler into an up draft heater, the damperplate 37 is moved by the handle 42 to uncover theJ openings 26, therebyallowing the draft to flow upwardly through the water grate into thechamber 22, thence upwardly through the draft openings 26 in the majorsection into the chamber 28, and then on through the chamber 33 to thechim` ney, as hereinbefore described. The result of the use of theseconvertible drafts is to substantially consume the bulk of the productsof combustion before the chimney is reached, thereby providing amaximumabsorption of heat by the surrounding heating medium chambers within thesubstantially cylindrical boiler unit.

Any suitable shaking means may be provided on the hollow water grate foreffectively obtaining a free and uninterrupted fiow of the products ofcombustion. As shown, this shaking means comprises a grate 44 composedof space bars 45 arranged with in a suitable frame. The grate is movableon the pivot 46, and can be operated by a handle 47 projecting outwardlythrough an o )enino in the bottom water section. whichv i CD l may beclosed by the door 48, as shown. In providing this shaking means it willbe obvious that all tendencyof the accumulation of clinkers and otherforeign substances can be eliminated, and the highest possible efhciencyof the fuel obtained. The parallel arrangement of the bars will alsoprovide for further draft adjustment. The relatively positioned bars 45upon the water grate over the spaces formed therebetween will permit ofobtaining further varying draft adjustment when the shaker is shifted.

rlhe means for securing the several sec, tions together in forming asubstantially cylindrical heating unit includes a plurality oflugs 49through which pass suitable draw bolts G5, as clearly shown in Fig. l. Asuiiicient number' of these fastening devices is provided around andbetween the sections of the boiler in order to prevent leakagetherefrom. Suitable packing material may be used between the sections inorder to further prevent any tendency of the boiler to leak, as shown inthe drawings.

`From the foregoing it will be seen that a compact and eliicient heaterhas been produced in which all of the advantages of the convertible upand down draft boiler-are incorporated, and the circular or cylindricalform of the heater as a unit maintained.

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

l. A cylindrical boiler of the class described consisting of a pluralityof hori Zontally arranged superimposed hollow sections through which aheating medium circulates, the said sections including a major hollowsection having a vertical flue therein, a water grate section arrangedbeneath the major hollow section, a bottom hollow section arrangedbeneath the water grate section, a top section positioned upon the majorhollow section, a vertical arcuate shaped liuc extending from the saidbottom section to the top section, an adjacent Hue communicating withsaid ue and extending to the outside of the boiler, and means interposedbetween the vertical iiue in the major water section and the aforesaidiues for directing the iiow of the prodtions including a major Vsectionhaving a vertical flue therein, a hollow grate section arranged belowsaid major section, a vertical arcuate shaped flue extending frombeneath the hollow grate section to a point yabove the major section, anadjacent conduit communicating with saidl vertical arcuate iiue andextending to the outside of the boiler, and means for controlling thedirection of the products of combustion through said boiler. e Y Y 8. Asubstantially round boiler of the class described consisting of aplurality of superimposed hollow sections through which a heating mediumcirculates, the said sections including a major section, having a iiuetherein, a hollow grate section beneath said major section, an arcuateshaped flue extending from beneath the said hollow grate section to apoint above the flue opening in the section to the outside of theboiler, and means for relatively controlling the direction of theproducts of combustion through the aforesaid flue openings.

4. A substantially round boiler of the class described consisting of aVplurality of superimposed hollow sections through which Va heatingmedium circulates, the said sections including a major section havingarcuate flue openings therein, a hollow grate section 'beneath saidmajor section, an arcuate shaped flue extending from beneath the hollowgrate section to a point above the arcuately arranged flue openings tothe outside of the boiler, and means for relatively controlling'k thedirection of the products of combustion through the first mentioned HueY openings.

5. A substantially round boiler of the class described consisting of aplurality of superimposed hollow sections through which a heating mediumcirculates, the said sections including a major section having aplurality of flue openings therein, a hollow grate section beneath saidmajor section, a crescent shaped iiue extending from beneath the hollowgrate section to a point above the flue openings of the major section tothe outside of the boiler, said flue being arranged within the crosssectional boundaries of the boiler on one side thereof, and means forrelatively controlling the direction of the products of combustionthrough the first mentioned flue openings.

6. A substantially round boiler of the class described consisting of aplurality of superimposed hollow sections through which a heating mediumcirculates, the said sections including a major sectionl having avertical flue therein, a hollow grate section, a top section positionedupon said major section having a series of vertically disposed battleshaving an opening therebetween, a flue extending from beneath the hollowgrate section to a point above the major section, a conduitcommunicating with said second mentioned Hue and the opening formedbetween the vertical baiies and extending to the outside of the boiler,and means for relatively controlling the direction of the products ofcombustion through the first mentioned vertical flue opening.

7. A substantially round boiler of the class described consisting of aplurality of superimposed hollow sections through which a heating mediumcirculates, the said sections including a major section having avertical flue therein, a hollow grate section beneath said majorsection, a top section positioned upon said major section having aUshaped baliie formed therein, a iiue extending from beneath the hollowgrate section to a point above the major section, a conduitcommunicating with said second mentioned flue and extending to theoutside `of the boiler, and means for relatively controlling thedirection of the products of combustion through the first mentionedvertical flue opening.

In testimony whereof I aiiix my signature, in presence of twosubscribing witnesses.

HENRY TIELKEMEYER. Vitnesses MAX SicoLorF, J. SIcoLorF.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

